Is Tokenbox itself a trading exchange or is it a gateway to access trading exchanges?

Tokenbox is not an exchange. Individual investors will not be using the platform as an exchange, meanwhile, investors will be able to buy tokens of Funds and Traders (to make a choice, buy, keep tokens on the platform, repay tokens, receive revenue, etc.) For Funds and Traders Tokenbox will be a gateway for entering to exchanges via API, using trading terminal.